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Saltpeter, Salpeter or saltpetre collectively refers to several nitrogen-based compounds and minerals:
- Potassium nitrate (KNO3), the critical oxidizing component of gunpowder, and a food preservative
- niter, the mineral form of potassium nitrate
- Sodium nitrate (Peru saltpeter or Chile saltpeter), a component of fertilizers, explosives and solid rocket propellants; also a food preservative
- Nitratine, the mineral form of sodium nitrate
- Calcium nitrate ("Norway saltpeter", "Norges salpeter" or "nitrate of lime"), a compound produced in Norway by the Birkeland–Eyde process during early 20th century
- Magnesium nitrate, a hygroscopic salt with the formula Mg(NO3)2
- See also
|This disambiguation page lists articles associated with the title Saltpeter.
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